It is caused by the moisture in the paper which trapped under coating layer. When heated, it expands rather then evaporats to form bubbles.
titanium plate and titanium coating layer colour painting
Degreasing and pickling treatment will lead to the formation of good adhesion of the coating is not good, not on the zinc or zinc coating layer.
"Although flame retardation epoxy resin or plastic case is used in the coating or encapsulating of plastic film capacitor, continuous outer high temperature or flame will break the coating layer,and may lead to melting or firing of the capacitor element."
The strength of coating layer obtained by one-shot self-felt powder with subsonic oxygen-acetylene spraying technique was discussed.
Exothermic efficiency, metallographical structure and transition region of coating layer were also investigated.
After the calender, the coating layer gradually cooled to form a bright surface layer.
Modified migration model of chemical substances from paper through plastic coating layer and its universality
In high humidity circumstance, it was cautioned that shell mold should be dried before next coating layer should be brushed and drying time should be extended before shell mold dewaxed.
The effects of mica on brushability in EPC and coating layer on the wettability of liquidized product of foam pattern were investigated.
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